Connectors are used to connect coaxial cables to various electronic devices, such as televisions, antennas, set-top boxes, satellite television receivers, etc. Conventional coaxial connectors generally include a connector body having an annular collar for accommodating a coaxial cable, an annular nut rotatably coupled to the collar for providing mechanical attachment of the connector to an external device, and an annular post interposed between the collar and the nut. The annular collar that receives the coaxial cable includes a cable receiving end for insertably receiving a coaxial cable and, at the opposite end of the connector body, the annular nut includes an internally threaded end that permits screw threaded attachment of the body to an external device.
This type of coaxial connector also typically includes a locking sleeve to secure the cable within the body of the coaxial connector. The locking sleeve, which is typically formed of a resilient plastic material, is securable to the connector body to secure the coaxial connector thereto. In this regard, the connector body typically includes some form of structure to cooperatively engage the locking sleeve. Such structure may include one or more recesses or detents formed on an inner annular surface of the connector body, which engages cooperating structure formed on an outer surface of the sleeve.
Conventional coaxial cables typically include a center conductor surrounded by an insulator. A conductive foil is disposed over the insulator and a braided conductive shield surrounds the foil-covered insulator. An outer insulative jacket surrounds the shield. In order to prepare the coaxial cable for termination with a connector, the outer jacket is stripped back exposing a portion of the braided conductive shield. The exposed braided conductive shield is folded back over the jacket. A portion of the insulator covered by the conductive foil extends outwardly from the jacket and a portion of the center conductor extends outwardly from within the insulator.
Upon assembly, a coaxial cable is inserted into the cable receiving end of the connector body and the annular post is forced between the foil covered insulator and the conductive shield of the cable. In this regard, the post is typically provided with a radially enlarged barb to facilitate expansion of the cable jacket. The locking sleeve is then moved axially into the connector body to clamp the cable jacket against the post barb providing both cable retention and a water-tight seal around the cable jacket. The connector can then be attached to an external device by tightening the internally threaded nut to an externally threaded terminal or port of the external device.
The Society of Cable Telecommunication Engineers (SCTE) provides values for the amount of torque recommended for connecting such coaxial cable connectors to various external devices. Indeed, most cable television (CATV), multiple systems operator (MSO), satellite and telecommunication providers also require their installers to apply a torque requirement of 25 to 30 in/lb to secure the fittings against the interface (reference plane). The torque requirement prevents loss of signals (egress) or introduction of unwanted signals (ingress) between the two mating surfaces of the male and female connectors, known in the field as the reference plane.
A large number of home coaxial cable installations are often done by “do-it yourself” laypersons who may not be familiar with torque standards associated with cable connectors. In these cases, the installer will typically hand-tighten the coaxial cable connectors instead of using a tool, which can result in the connectors not being properly seated, either upon initial installation, or after a period of use. Upon immediately receiving a poor signal, the customer typically calls the CATV, MSO, satellite or telecommunication provider to request repair service. Obviously, this is a cost concern for the CATV, MSO, satellite and telecommunication providers, who then have to send a repair technician to the customer's home.
Moreover, even when tightened according to the proper torque requirements, another problem with such prior art connectors is the connector's tendency over time to become disconnected from the external device to which it is connected, due to forces such as vibrations, heat expansion, etc. Specifically, the internally threaded nut for providing mechanical attachment of the connector to an external device has a tendency to back-off or loosen itself from the threaded port connection of the external device over time. Once the connector becomes sufficiently loosened, electrical connection between the coaxial cable and the external device is broken, resulting in a failed condition.
In one implementation, connector body 12 (also referred to as a “collar”) may include an elongated, cylindrical member, which can be made from plastic, metal, or any suitable material or combination of materials. Connector body 12 may include a forward end 20 operatively coupled to annular post 16 and rotatable nut 18, and a cable receiving end 22 opposite to forward end 20. Cable receiving end 22 may be configured to insertably receive locking sleeve 14, as well as a prepared end of a coaxial cable 100 in the forward direction as shown by arrow A in
Locking sleeve 14 may include a substantially tubular body having a rearward cable receiving end 30 and an opposite forward connector insertion end 32, movably coupled to inner sleeve engagement surface 24 of the connector body 12. As mentioned above, the outer cylindrical surface of locking sleeve 14 may be configured to include a plurality of ridges or projections 28, which cooperate with groove or recess 26 formed in inner sleeve engagement surface 24 of the connector body 12 to allow for the movable connection of sleeve 14 to the connector body 12, such that locking sleeve 14 is lockingly axially moveable along the direction of arrow A toward the forward end 20 of the connector body 12 from a first position, as shown, for example, in
In some additional implementations, locking sleeve 14 may include a flanged head portion 34 disposed at the rearward cable receiving end 30 of locking sleeve 14. Head portion 34 may include an outer diameter larger than an inner diameter of the body 12 and may further include a forward facing perpendicular wall 36, which serves as an abutment surface against which the rearward end 22 of body 12 stops to prevent further insertion of locking sleeve 14 into body 12. A resilient, sealing O-ring 37 may be provided at forward facing perpendicular wall 36 to provide a substantially water-tight seal between locking sleeve 14 and connector body 12 upon insertion of the locking sleeve within the body and advancement from the first position (
As mentioned above, connector 10 may further include annular post 16 coupled to forward end 20 of connector body 12. As illustrated in
As illustrated in
Connector 10 may be supplied in the assembled condition, as shown in the drawings, in which locking sleeve 14 is pre-installed inside rearward cable receiving end 22 of connector body 12. In such an assembled condition, a coaxial cable may be inserted through rearward cable receiving end 30 of locking sleeve 14 to engage annular post 16 of connector 10 in the manner described above. In other implementations, locking sleeve 14 may be first slipped over the end of a coaxial cable and the cable (together with locking sleeve 14) may subsequently be inserted into rearward end 22 of connector body 12.
In either case, once the prepared end of a coaxial cable is inserted into connector body 12 so that the cable jacket is separated from the insulator by the sharp edge of annular post 16, locking sleeve 14 may be moved axially forward in the direction of arrow A from the first position (shown in
As illustrated below in relation to
As illustrated in
Biasing element 200 can take various forms, but in each form biasing element 200 is preferably made from a durable, resilient electrically conductive material, such as spring steel, for transferring the electrical signal from post shoulder portion 38 to rearward face 58 of mating connector port 48. In the embodiment shown in
In both embodiments described above, base portion 215/415 of the ring 210/410 is preferably press-fit within a circular groove 225 formed directly in forward face 56 of the post shoulder portion 38. Also in both embodiments, with ring 210/410 fixed to the post shoulder portion 38, deflectable skirt 220/420 may extend beyond forward face 56 of the post shoulder portion 38 a distance in the forward direction and is permitted to deflect or deform with respect to fixed base portion 215 toward and away from post forward face 56.
In an alternative embodiment, as shown in
Like the deflectable skirts 220/420 described above, the deflectable rim 625 of
In another alternative embodiment, as shown in
Like the deflectable skirt 220 described above, deflectable skirt 725 of ring 710 may extend in a forward direction from a forward end of cylindrical wall 715 and may also extend in a direction radially inward from cylindrical wall 715. In one implementation, deflectable skirt 725 may project at an angle of approximately 45 degrees relative to forward surface 56 of annular post 16. Furthermore, deflectable skirt 725 may project approximately 0.039 inches from the forward edge of ring 710. When snap-fit over the post shoulder portion 38, deflectable skirt 725 may extend beyond the forward face 56 of post shoulder portion 38 a distance in the forward direction and is permitted to deflect or deform with respect to the cylindrical wall 715 toward and away from post forward face 56.
By providing a biasing element 200/400/600/700 on forward face 56 of post shoulder portion 38, connector 10 may allows for up to 360 degree “back-off” rotation of the nut 18 on a terminal, without signal loss. In other words, the biasing element may help to maintain electrical continuity even if the nut is partially loosened. As a result, maintaining electrical contact between coaxial cable connector 10 and the signal contact of port connector 48 is improved by a factor of 400-500%, as compared with prior art connectors.
Referring now to
Biasing element 810 may include a conductive, resilient element configured to provide a suitable biasing force between annular post 16 and rearward surface 58 of port connector 48. The conductive nature of biasing element 810 may facilitate passage of electrical and radio frequency (RF) signals from annular post 16 to port connector 48 at varying degrees of insertion relative to port connector 48 and connector 10.
In one implementation, biasing element 810 may include a conical spring having first, substantially cylindrical attachment portion 815 configured to engagingly surround at least a portion of flanged base portion 38, and a second portion 820 having a number of slotted resilient fingers 825 configured in a substantially conical manner with respect to first portion 815. As illustrated in
In one exemplary embodiment, resilient fingers 825 may be equally spaced around a circumference of biasing element 810, such that biasing element 810 includes eight resilient fingers 825, with a centerline of each finger 825 being positioned approximately 45° from its adjacent fingers 825. The number of resilient fingers 825 illustrated in
First portion 815 of biasing element 810 may be configured to have an inside diameter substantially equal to the outside diameter of lip portion 805. First portion 815 may be further configured to include a number of attachment elements 830 designed to engage notch portion 800 of flanged base portion 38. As illustrated in
In one embodiment, biasing element 810 may be formed of a metallic material, such as spring steel, having a thickness of approximately 0.008 inches. In other implementations, biasing element 810 may be formed of a resilient, elastomeric, rubber, or plastic material, impregnated with conductive particles.
During assembly of connector 10, first portion 815 of biasing element 810 may be engaged with flanged base portion 38, e.g., by forcing the inside diameter of first portion 815 over the angled outside diameter of lip portion 805. Continued rearward movement of biasing element 810 relative to flanged base portion 38 causes detents 835 to engage annular notch portion 800, thereby retaining biasing element 810 to annular post 16, while enabling biasing element 810 to freely rotate with respect to annular post 16.
In an initial, uncompressed state (as shown in
Continued insertion of port connector 48 into connector 10 may cause compression of resilient fingers 825, thereby providing a load force between flanged base portion 38 and port connector 48 and decreasing the distance between rearward surface 58 of port connector 48 and forward surface 56 of annular post 16. This load force may be transferred to threads 52 and 54, thereby facilitating constant tension between threads 52 and 54 and decreasing the likelihood that port connector 48 will become loosened from connector 10 due to external forces, such as vibrations, heating/cooling, etc.
Upon installation, the annular post 16 may be incorporated into a coaxial cable between the cable foil and the cable braid and may function to carry the RF signals propagated by the coaxial cable. In order to transfer the signals, post 16 makes contact with the reference plane of the mating connector (e.g., port connector 48). By retaining biasing element 610 in notch 800 in annular post 16, biasing element 810 is able to ensure electrical and RF contact at the reference plane of port connector 48. The stepped nature of post 16 enables compression of biasing element 810, while simultaneously supporting direct interfacing between post 16 and port connector 48. Further, compression of biasing element 810 provides equal and opposite biasing forces between the internal threads of nut 18 and the external threads of port connector 48.
Referring now to
As illustrated in
In one implementation, biasing element 1110 may include a conical spring having a substantially cylindrical first portion 1115 configured to engagingly surround at least a portion of flanged base portion 38, and a second portion 1120 having a number of slotted resilient fingers 1125 configured in a curved, substantially conical manner with respect to first portion 1115. As illustrated in
In one exemplary embodiment, resilient fingers 1125 may be formed in a radially curving manner, such that each finger 1125 extends radially along its length. Resilient fingers 1125 may be equally spaced around the circumference of biasing element 1110, such that biasing element 1110 includes eight, equally spaced, resilient fingers. The number of resilient fingers 1125 disclosed in
First portion 1115 of biasing element 1110 may be configured to have an inside diameter substantially equal to the outside diameter of lip portion 1105. First portion 1115 may be further configured to include a number of attachment elements 1130 designed to engage notch portion 1110 of flanged base portion 38. As illustrated in
In one embodiment, biasing element 1110 may be formed of a metallic material, such as spring steel, having a thickness of approximately 0.008 inches. In other implementations, biasing element 1110 may be formed of a resilient, elastomeric, rubber, or plastic material, impregnated with conductive particles. Furthermore, in an exemplary implementation, biasing element 1110 may have an inside diameter of approximately 0.314 inches, with first portion 1115 having a length of approximately 0.080 inches and second portion 1120 having an axial length of approximately 0.059 inches. Each of radially curved fingers 1125 may have an angle of approximately 45° relative to an axial direction of biasing element 1110. The forward end of second portion 1120 may have a diameter of approximately 0.196 inches and the rearward end of second portion 1120 may have a diameter of approximately 0.330 inches. Each dimple or detent 1135 may have a radius of approximately 0.020 inches.
During assembly of connector 10, first portion 1115 of biasing element 1110 may be engaged with flanged base portion 38, e.g., by forcing the inside diameter of first portion 1115 over the angled outside diameter of lip portion 1105. Continued rearward movement of biasing element 1110 relative to flanged base portion 38 causes detents 1135 to engage annular notch portion 1100, thereby retaining biasing element 1110 to annular post 16, while enabling biasing element 1110 to freely rotate with respect to annular post 16.
In an initial, uncompressed state (as shown in
Continued insertion of port connector 48 into connector 10 may cause compression of resilient fingers 1125, thereby providing a load force between flanged base portion 38 and port connector 48 and decreasing the distance between rearward surface 58 of port connector 48 and forward surface 56 of annular post 16. This load force may be transferred to threads 52 and 54, thereby facilitating constant tension between threads 52 and 54 and decreasing the likelihood that port connector 48 will become loosened from connector 10 due to external forces, such as vibrations, heating/cooling, etc.
Referring now to
As illustrated in
In one implementation, biasing element 1315 may include a conical spring having a first, substantially cylindrical attachment portion 1320 configured to engagingly surround at least a portion of body portion 1305 of flanged base portion 38, and a second portion 1325 having a number of slotted resilient fingers 1330 configured in a substantially conical manner with respect to first portion 1320. As illustrated in
First portion 1320 of biasing element 1315 may be configured to have an inside diameter substantially equal to the outside diameter of body portion 1305. In addition, first portion 1320 of biasing element 1315 may include a flange 1335 extending annularly from its rearward end. Flange 1335 may be configured to enable biasing element 1315 to be press-fit by an appropriate tool or device about body portion 1305, such that biasing element 1315 is frictionally retained against body portion 1305.
In one exemplary embodiment, resilient fingers 1330 may be equally spaced around a circumference of biasing element 1315, such that biasing element 1315 includes eight resilient fingers 1330, with a centerline of each finger 1330 being positioned approximately 45° from its adjacent fingers 1330. The number of resilient fingers 1330 illustrated in
In one embodiment, biasing element 1315 may be formed of a metallic material, such as spring steel, having a thickness of approximately 0.008 inches. In other implementations, biasing element 1315 may be formed of a resilient, elastomeric, rubber, or plastic material, impregnated with conductive particles. Furthermore, in an exemplary implementation, biasing element 1315 may have an inside diameter of approximately 0.285 inches, with first portion 1320 having a length of approximately 0.080 inches and second portion 1325 having an axial length of approximately 0.059 inches. Each of resilient fingers 1330 may have an angle of approximately 45° relative to an axial direction of biasing element 1315. The forward end of second portion 1325 may have a diameter of approximately 0.196 inches and the rearward end of second portion 1325 may have a diameter of approximately 0.301 inches.
During assembly of connector 10, first portion 1320 of biasing element 1315 may be engaged with flanged base portion 38, e.g., by forcing the inside diameter of first portion 1320 over the angled outside diameter of body portion 1305. Continued rearward movement of biasing element 1315 relative to body portion 1305, e.g., via force exerted on flange 1335, may cause biasing element 1315 to engage body portion 1305, thereby retaining biasing element 1315 to annular post 16.
In an initial, uncompressed state (as shown in
The conductive nature of biasing element 1315 may enable effective transmission of electrical and RF signals from port connector 48 to annular post 16 even when separated by distance z, effectively increasing the reference plane of connector 10. Continued insertion of port connector 48 into connector 10 may cause compression of resilient fingers 1330, thereby providing a load force between flanged base portion 38 and port connector 48 and decreasing the distance between rearward surface 58 of port connector 48 and forward surface 56 of annular post 16. This load force may be transferred to threads 52 and 54, thereby facilitating constant tension between threads 52 and 54 and decreasing the likelihood that port connector 48 will become loosened from connector 10 due to external forces, such as vibrations, heating/cooling, etc.
Referring now to
Consistent with implementations described herein, biasing element 1510 may include a conductive, resilient element configured to provide a suitable biasing force between annular post 16 and rearward surface 58 of port connector 48 (as shown in
In one implementation, biasing element 1510 may include a stamped, multifaceted spring having a first, substantially octagonal attachment portion 1515 configured to engagingly surround at least a portion of flanged base portion 38, and a second, resilient portion 1520 having a number angled or beveled spring surfaces extending in a resilient relationship from attachment portion 1515. Second, resilient portion 1520 may include an opening therethrough corresponding to tubular extension 40 in annular post 16.
For example, as will be described in additional detail below with respect to
For example, biasing element 1510 may be initially cut (e.g., die cut) from a sheet of conductive material, such as steel, spring steel, or stainless steel having a thickness of approximately 0.008 inches. Octagonal outer ring 1600 may be bent downward from resilient portion 1605 until outer ring 1600 is substantially perpendicular to a plane extending across an upper surface of resilient portion 1605. Angled or beveled surfaces 1615 may be formed in resilient portion 1605, such that differences in an uncompressed thickness of resilient portion 1605 are formed. For example, resilient portion 1605 may be stamped or otherwise mechanically deformed to form a number of angled surfaces, where a lowest point in at least two of the angled surfaces are spaced a predetermined distance in a vertical (or axial) direction (e.g., 0.04 inches) from the upper edge of octagonal outer ring 1600. In essence, the formation of angled or curved surfaces in resilient portion 1605 creates a spring relative to octagonal outer ring 1600.
As shown in
In a second position, as shown in
First portion 1515 of biasing element 1510 may be configured to have a minimum inside width (e.g., between opposing octagonal sections) substantially equal to the outside diameter of lip portion 1505. First portion 1515 may be further configured to include a number of attachment elements 1620 designed to engage notch portion 1500 of flanged base portion 38. As illustrated in
During assembly of connector 10, first portion 1515 of biasing element 1510 may be engaged with flanged base portion 38, e.g., by forcing first portion 1515 over the angled outside diameter of lip portion 1505. Continued rearward movement of biasing element 1510 relative to flanged base portion 38 causes detents 1625 to engage annular notch portion 1500, thereby retaining biasing element 1510 to annular post 16, while enabling biasing element 1510 to freely rotate with respect to annular post 16.
In an initial, uncompressed state (as shown in
Continued insertion of port connector 48 into connector 10 may cause compression of second, angled portion 1520, thereby providing a load force between flanged base portion 38 and port connector 48 and decreasing the distance between rearward surface 58 of port connector 48 and forward surface 56 of annular post 16. This load force may be transferred to threads 52 and 54, thereby facilitating constant tension between threads 52 and 54 and decreasing the likelihood that port connector 48 will become loosened from connector 10 due to external forces, such as vibrations, heating/cooling, etc.
Upon installation, the annular post 16 may be incorporated into a coaxial cable between the cable foil and the cable braid and may function to carry the RF signals propagated by the coaxial cable. In order to transfer the signals, post 16 makes contact with the reference plane of the mating connector (e.g., port connector 48). By retaining biasing element 1510 in notch 1500 in annular post 16, biasing element 1510 is able to ensure electrical and RF contact at the reference plane of port connector 48. The stepped nature of post 16 enables compression of biasing element 1510, while simultaneously supporting direct interfacing between post 16 and port connector 48. Further, compression of biasing element 1510 provides equal and opposite biasing forces between the internal threads of nut 18 and the external threads of port connector 48.
Referring now to
In one implementation, attachment portion 1705 and center portion 1715 may be integrally formed from a sheet of resilient material, such as spring or stainless steel. As illustrated in
Resilient center portion 1715 may include a curved or U-shaped configuration, configured to provide center portion 1715 with a low portion 1725 disposed between sides 1710-2 and 1710-4 and high portions 1730 adjacent sides 1710-4 and 1710-6. That is, resilient center portion 1715 is formed to create a trough between opposing portions of attachment portion 1705.
When the connector is in a first position (in which port connector 48 is not attached to connector 10), the relationship between low portion 1725 and high portions 1730 causes low portion 1725 of biasing element 1700 to abut a forward edge of annular post 16, while high portions 1730 of biasing element 1700 are separated from the forward edge of annular post 16 by a distance equivalent to the depth of the trough formed between low portion 1725 and high portions 1730.
In a second position, similar to that shown in
Attachment portion 1705 of biasing element 1700 may be configured to have a minimum inside width (e.g., between opposing octagonal sections) substantially equal to the outside diameter of lip portion 1505. Attachment portion 1705 may be further configured to include a number of attachment elements 1735 designed to engage notch portion 1500 of flanged base portion 38. As illustrated in
During assembly of connector 10, attachment portion 1705 of biasing element 1700 may be engaged within flanged base portion 38, e.g., by forcing attachment portion 1705 over the angled outside diameter of lip portion 1505. Continued rearward movement of biasing element 1700 relative to flanged base portion 38 causes tabs 1740 to engage annular notch portion 1500, thereby retaining biasing element 1700 to annular post 16, while enabling biasing element 1700 to freely rotate with respect to annular post 16.
As illustrated in
Tabbed portions 1825-1 to 1825-4 may include resilient tabs 1830-1 to 1830-4, respectively, having an angled surface and configured to resiliently project from a first end 1835 adjacent to the top of angled sides 1810 to a second end 1840 distal from, and lower than, first end 1835. In one exemplary embodiment, second distal end 1840 is approximately 0.04″ lower (e.g., in a vertical or axial direction) than first end 1835 of resilient tabs 1830-1 to 1830-4.
In one implementation, the angled surfaces of resilient tabs 1830-1 to 1830-4 may be configured to provide the biasing force between annular post 16 and port connector 48. As shown in
For example, resilient tabs 1830-1 to 1830-4 may project from respective angled sides 1810-3, 1810-5, 1810-7, and 1810-1 in a parallel relationship to an adjacent angled side (e.g., side 1810-2, 1810-4, 1810-6, or 1810-8). For example, tabbed portion 1825-2 may project from angled side 1810-5 with resilient tab 1830-2 projecting from tabbed portion 1825-2 parallel to angled side 1810-4. In one implementation, attachment portion 1805 and central portion 1815 may be stamped from a sheet of resilient material, such as spring or stainless steel.
When the connector is in a first position (in which port connector 48 is not attached to connector 10), the relationship between second ends 1840 of resilient tabs 1830-1 to 1830-4 and first ends 1835 of resilient tabs 1830-1 to 1830-4 may cause second ends 1840 of resilient tabs 1830-1 to 1830-4 to abut a forward edge of annular post 16, while first ends 1835 of resilient tabs 1830-1 to 1830-4 are separated from the forward edge of annular post 16.
In a second position, similar to that shown in
Attachment portion 1805 of biasing element 1800 may be configured to have a minimum inside width (e.g., between opposing octagonal sections) substantially equal to the outside diameter of lip portion 1505. Attachment portion 505 may be further configured to include a number of attachment elements designed to engage notch portion 1500 of flanged base portion 38 (not shown in
During assembly of connector 10, attachment portion 1805 of biasing element 1800 may be engaged within flanged base portion 38, e.g., by forcing attachment portion 505 over the angled outside diameter of lip portion 1505. Continued rearward movement of biasing element 1800 relative to flanged base portion 38 causes the attachment elements to engage annular notch portion 1500, thereby retaining biasing element 1800 to annular post 16, while enabling biasing element 1800 to freely rotate with respect to annular post 16.
As illustrated in
Arcuate tabbed portions 1915-1 to 1915-3 may include resilient tabs 1930-1 to 1930-3, respectively, having an angled surface and configured to resiliently project from spoke portions 1920-1 to 1920-3, respectively. For each tab 1930-1 to 1930-3, a first end 1935 is radially connected to spoke portion 1920-1 to 1920-3, respectively. Each tab 1930-1 to 1930-3 extends from first end 1935 to a second end 1940 distal from, and lower than, first end 1935. In one exemplary embodiment, second distal end 1940 is approximately 0.04″ lower than a respective spoke portion 1920 (e.g., in a vertical or axial direction).
In one implementation, the angled surfaces of resilient tabs 1930-1 to 1930-3 may be configured to provide the biasing force between annular post 16 and port connector 48. In one implementation, attachment portion 1905 and central portion 1915 may be stamped from a sheet of resilient material, such as spring or stainless steel.
When the connector is in a first position (in which port connector 48 is not attached to connector 10), the relationship between second ends 1940 of resilient tabs 1930-1 to 1930-3 and spoke portions 1920/central support ring 1925 of resilient tabs 1930-1 to 1930-3 may cause second ends 1940 of resilient tabs 1930-1 to 1930-3 to abut a forward edge of annular post 16, while spoke portions 1920/central support ring 1925 are separated from the forward edge of annular post 16.
In a second position, similar to that shown in
Attachment portion 1905 of biasing element 1900 may be configured to have a minimum inside diameter substantially equal to the outside diameter of lip portion 1505. Attachment portion 1905 may be further configured to include a number of attachment elements designed to engage notch portion 1500 of flanged base portion 38 (not shown in
During assembly of connector 10, attachment portion 1905 of biasing element 1900 may be engaged within flanged base portion 38, e.g., by forcing attachment portion 1905 over the angled outside diameter of lip portion 1505. Continued rearward movement of biasing element 1900 relative to flanged base portion 38 causes the attachment elements to engage annular notch portion 1500, thereby retaining biasing element 1900 to annular post 16, while enabling biasing element 1900 to freely rotate with respect to annular post 16.
Tabbed portions 2130-1 to 2130-4 may include resilient tabs 2135-1 to 2135-4, respectively, having an angled surface and configured to resiliently project within tab openings 2125-1 to 2125-4, respectively. For each tab 2135-1 to 2135-4, a first end 2140 is axially connected to an outside edge of tab openings 2125-1 to 2125-4, respectively. Each tab 2135-1 to 2135-4 extends from first end 2140 to a second end 2145 distal from, and lower than, first end 2140 in an axial direction. In one exemplary embodiment, second distal end 2145 is approximately 0.04″ lower than circular hub portion 2120.
In one implementation, the angled surfaces of resilient tabs 2135-1 to 2135-4 may be configured to provide the biasing force between annular post 16 and port connector 48. In one implementation, attachment portion 2105 and central portion 2110 may be stamped from a sheet of resilient material, such as spring or stainless steel.
When the connector is in a first position (in which port connector 48 is not attached to connector 10), the relationship between second ends 2145 of resilient tabs 2135-1 to 2135-4 and circular hub portion 2120 may cause second ends 2145 to abut a forward edge of annular post 16, while circular hub portion 2120 is separated from the forward edge of annular post 16.
In a second position, similar to that shown in
Attachment portion 2105 of biasing element 2100 may be configured to have a minimum inside diameter substantially equal to the outside diameter of lip portion 1505. Attachment portion 2105 may be further configured to include a number of attachment elements designed to engage notch portion 1500 of flanged base portion 38 (not shown in
During assembly of connector 10, attachment portion 2105 of biasing element 2100 may be engaged within flanged base portion 38, e.g., by forcing attachment portion 2105 over the angled outside diameter of lip portion 1505. Continued rearward movement of biasing element 2100 relative to flanged base portion 38 causes the attachment elements to engage annular notch portion 1500, thereby retaining biasing element 2100 to annular post 16, while enabling biasing element 2100 to freely rotate with respect to annular post 16.
As shown in
In one implementation, the angled or curved surfaces of spring elements 2220 may be configured to provide the biasing force between annular post 16 and port connector 48. In one implementation, attachment portion 2205 and resilient portion 2210 may be stamped from a sheet of resilient material, such as spring or stainless steel.
When the connector is in a first position (in which port connector 48 is not attached to connector 10), the relationship between the inside edge of each spring element 2220 to the outside edge of each spring element 2220 may cause the outside edge to abut a forward edge of annular post 16, while the inside edge is separated from the forward edge of annular post 16.
In a second position, similar to that shown in
Attachment portion 2205 of biasing element 2200 may be configured to have a minimum inside diameter substantially equal to the outside diameter of lip portion 1505. Attachment portion 2205 may be further configured to include a number of attachment elements 2235 designed to engage notch portion 1500 of flanged base portion 38. Similar to the attachment elements disclosed above in relation to
During assembly of connector 10, attachment portion 2205 of biasing element 2200 may be engaged within flanged base portion 38, e.g., by forcing attachment portion 2205 over the angled outside diameter of lip portion 1505. Continued rearward movement of biasing element 2200 relative to flanged base portion 38 causes the attachment elements to engage annular notch portion 1500, thereby retaining biasing element 2200 to annular post 16, while enabling biasing element 2200 to freely rotate with respect to annular post 16.
The foregoing description of exemplary implementations provides illustration and description, but is not intended to be exhaustive or to limit the embodiments described herein to the precise form disclosed. Modifications and variations are possible in light of the above teachings or may be acquired from practice of the embodiments.
For example, various features have been mainly described above with respect to a coaxial cables and connectors for securing coaxial cables. The above-described connector may pass electrical and radio frequency (RF) signals typically found in CATV, Satellite, closed circuit television (CCTV), voice of Internet protocol (VoIP), data, video, high speed Internet, etc., through the mating ports (about the connector reference planes). Providing a biasing element, as described above, may also provide power bonding grounding (i.e., helps promote a safer bond connection per NEC® Article 250 when the biasing element is under linear compression) and RF shielding (Signal Ingress & Egress).
In other implementations, features described herein may be implemented in relation to other cable or interface technologies. For example, the coaxial cable connector described herein may be used or usable with various types of coaxial cable, such as 50, 75, or 93 ohm coaxial cable, or other characteristic impedance cable designs.
Referring now to
For example, in one implementation, annular post 16 may be formed of a conductive material, such as aluminum, stainless steel, etc. During manufacture of annular post 16, tubular extension 40 in a forwardmost portion 2310 of flanged base portion 38 may be notched, cut, or bored to form expanded opening 2320. Expanded opening 2320 reduces the thickness of the side walls of forwardmost portion 2310 of annular post 16. Thereafter, forwardmost portion 2310 of flanged base portion 38 may be machined or otherwise configured to include a helical slot 2330 therein. Helical slot 2330 may have a thickness Ts dictated by the amount of forwardmost portion 2310 removed from annular post 16. In exemplary implementations, thickness Ts may range from approximately 0.010 inches to approximately 0.025 inches.
Formation of helical slot 2330 effectively transforms forwardmost portion 2310 of annular post 16 into a spring, enabling biased, axial movement of forward surface 56 of annular post 16 by an amount substantially equal to the thickness Ts of helical slot 2330 times the number of windings of helical slot 2330. That is, if helical slot 2330 includes three windings around forwardmost portion 2310, and Ts is 0.015 inches, the maximum compression of biasing portion 2300 from a relaxed to a compressed state is approximately 0.015 times three, or 0.045 inches. It should be understood that, although helical slot 2330 in
In an initial, uncompressed state (as shown in
Continued insertion of port connector 48 into connector 10 may cause compression of helical slot 2330 in biasing portion 2300, thereby providing a load force between flanged base portion 38 and port connector 48. This load force may be transferred to threads 52 and 54, thereby facilitating constant tension between threads 52 and 54 and decreasing the likelihood that port connector 48 will become loosened from connector 10 due to external forces, such as vibrations, heating/cooling, etc. As described above, the configuration of helical slot 2330 may enable resilient, axial movement of forward surface 56 of annular post 16 by a distance substantially equivalent to a thickness of helical slot 2330 times a number of windings of helical slot 2330 about annular post 16.
Because biasing portion 2300 is formed integrally with annular post 16, electrical and RF signals may be effectively transmitted from port connector 48 to annular post 16 even when in biasing portion 2330 is in a relaxed or not fully compressed state, effectively increasing the reference plane of connector 10. In one implementation, the above-described configuration enables a functional gap or “clearance” of less than or equal to approximately 0.043 inches, for example 0.033 inches, between the reference planes, thereby enabling approximately 360 degrees or more of “back-off” rotation of annular nut 18 relative to port connector 48 while maintaining suitable passage of electrical and/or RF signals. Further, compression of biasing portion 2300 provides equal and opposite biasing forces between the internal threads of nut 18 and the external threads of port connector 48.
Although the invention has been described in detail above, it is expressly understood that it will be apparent to persons skilled in the relevant art that the invention may be modified without departing from the spirit of the invention. Various changes of form, design, or arrangement may be made to the invention without departing from the spirit and scope of the invention. Therefore, the above mentioned description is to be considered exemplary, rather than limiting, and the true scope of the invention is that defined in the following claims.
No element, act, or instruction used in the description of the present application should be construed as critical or essential to the invention unless explicitly described as such. Also, as used herein, the article “a” is intended to include one or more items. Where only one item is intended, the term “one” or similar language is used. Further, the phrase “based on” is intended to mean “based, at least in part, on” unless explicitly stated otherwise.
This application claims priority under 35. U.S.C. §119, based on U.S. Provisional Patent Application Nos. 61/101,185 filed Sep. 30, 2008, 61/101,191, filed Sep. 30, 2008, 61/155,246, filed Feb. 25, 2009, 61/155,249, filed Feb. 25, 2009, 61/155,250, filed Feb. 25, 2009, 61/155,252, filed Feb. 25, 2009, 61/155,289, filed Feb. 25, 2009, 61/155,297, filed Feb. 25, 2009, 61/175,613, filed May 5, 2009, and 61/242,884, filed Sep. 16, 2009, the disclosures of which are all hereby incorporated by reference herein. The present application is also related to co-pending U.S. patent application Ser. Nos. ______, entitled “Cable Connector,” Attorney Docket No. 0067-0016 filed, Sep. 28, 2009, and U.S. patent application Ser. No. ______, entitled “Cable Connector,” Attorney Docket No. 0067-0015, filed Sep. 28, 2009, the disclosures of which are both hereby incorporated by reference herein.
Number | Date | Country | |
---|---|---|---|
61101185 | Sep 2008 | US | |
61101191 | Sep 2008 | US | |
61155246 | Feb 2009 | US | |
61155249 | Feb 2009 | US | |
61155250 | Feb 2009 | US | |
61155252 | Feb 2009 | US | |
61155289 | Feb 2009 | US | |
61155297 | Feb 2009 | US | |
61175613 | May 2009 | US | |
61242884 | Sep 2009 | US |